Expressionist Portrait Painting: Reusing Turpentine. Part of the series: Painting: Finishing an Expressionist Portrait. Reusing turpentine after painting an expressionist portrait saves time and money. Reuse turpentine with tips from an artist in this free video on painting. Read more: http://www.ehow.com/video_4978943_expressionist-portrait-painting-reusing-turpentine.html